package analysis.syntaxtree;import analysis.visitors.TypeVisitor;import analysis.visitors.Visitor;public class Assign implements Statement {	public Identifier varId;	public Exp valueExpr;	public Assign(Identifier ai, Exp ae) {		varId = ai;		valueExpr = ae;	}	public void accept(Visitor v) {		v.visit(this);	}	public Type accept(TypeVisitor v) {		return v.visit(this);	}}